package tasit;

interface A1 {
	public final static double PI_SABIT = 3.14;

	public double hesapla();
}

class Sample implements A1 {

	@Override
	public double hesapla() {
		return PI_SABIT * 10;
	}

}

public class SabitOrnek {
	public static void main(String[] args) {
		A1 sample = new Sample();

		System.out.println(sample.hesapla());
		// sample.PI_SABIT = 12;
	}
}
